Using this software should be considered a tactical maneuver for legacy migrations, not a standard operating procedure for your modern infrastructure. Once you have successfully converted your legacy machine, immediately look into upgrading the guest OS or finding a modern replacement for the application.
When working with 5.5-3 , error messages are cryptic. Here is a cheat sheet: vmware-vcenter-converter-standalone-5.5-3
On the surface, recommending version 5.5.3 seems counterintuitive. VMware has since released Converter 6.x, 7.x, and integrated migration tools. However, the 5.5-3 build holds unique advantages for specific legacy scenarios: Using this software should be considered a tactical
While 5.5.3 is robust, it is considered "legacy" software in 2024. Here are common troubleshooting points: and integrated migration tools. However